Document adbv1EK7pYnKar7JJqwanVKa
B. F. Goodrich Chomlcal Company A DIVISION OF THt E F. OOOONlCH COMPANY DEVELOPMENT CENTER
CCT2VSTI0N OF POLYMERIC MATERIALS PART II:
The Oxygen In-lex .'f polymers at Elevated Temperatures
By
Michael M. O'Mara George A. Lees
Date Completed; October 2}, 197^
Date issued: HoveMwr 6, 1970
DISTRIBUTION:
Akr:r. General Chemical Plant P.7.Whitmire-R.S.Reyn clda
Akrzr Legal Pegt. E.K.Bean
Aver. Lake General Chemical plar.t *R-H.Rylards-R.W.McKay J.M.Whitney
BrecKSVllle Research Center M.L.Dannls 4L **rt*._ D.Dlc kens .v jfr.f. IdW.
R.j.Pawcett-^J^J* BroeM j.M.Fouik C.F.Qlbba D.Thrasher D.R. Harvey P.y.ZakrlJKl J.Coleman Research Lltrary Calvert City C-L.Wcods-D.r.Scbroc/ Cleveland
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y..M .La: t';r. -J .L - Segr i>: ; 7) P.- .Lawr^r :<= GH-Met 2ge:
R.D.Scott-J.L.Nelson Va 1 ant 1 n
Henry
*C.B.C:cper-J.P.Piers
Long Beacn
*V .0 .Robb-A .W.Cler.ents
Louisville
L.G.Crunkletor.-5.S*Mlchel
Niagara Falls
T.R.Llnak
Pedrlcktown
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Developnent Center
L.F.Arnold *L.A.Bennett
C.H.L-fter R.J.yeyer
R.R.filoor L.A .Chandler
F. Be*** D.L.Xllenlis
E.A.Collins L.B.Crider
*C r * rcs C.V.P-r*s
L.H.Cor.kllr
I.W .Ryar
E.G.DeCaplta
N.H.Srerwo i
*B.A.DILI lie
C.T.-i-.eit
J.L.Dorsch
P.Dmytvrrv*-*C.EFleming
D.P.Ki.e:ruges
*a.L.'*;.eel ' << 1:'
R.A.7 rv.t
C.H.K vielnvr
*R.M.K:~
Pec:.:.: -ai C-u:
c.: - i * >
It jepe- :c;.ce
J.3.b.W:ire
_ --. ^
Shelton CSoonat
M \ -f
D. Dobey
* JodlRr/Ep-^| |
20937001
BFG08553
I
ACKNOWLEDGEMENT The author# wish to thank L.B. Crider and D. Dickens (Research Center) for their helpful comments during the course of this work.
V .-I
c
vt . *>
BFG08554
20987002
MAJOR OBJECTIVES
The major tJect-Ivej f this program re u:
Corotr'-iCt a ufij'.trr
c j rry lr.g .<`*1 the :;3*.iv
f F;lyt?erlw iraterltK* Jnier varying xy.-*.: anl
coni!, * i .ini ,
. r't*'-
(.) Devel;; the rc~e is* ry ana ' y t \ ; it-. i.. !' : jnalyoiy *:
oortajMc'-
dcgradatl or pr.Jj*. s fr-vt p.ivmers,
(5) Investigate the mecnanlsas of flaraaclUty *nd !ia-- retur j*tia' with respect *: condensed prase reactions ;pyrolysis ,
(**) provide support In the areas Involving tcxi: gas *v:luti:n, develhp*r.ert cf rew retardar.t systems and sn;<e ata:rrt.v..
LIMITED OBJECTIVES
( The Halted objectives of this study were to:
(1) Modify the combustion chamber previously described to provide combustion at elevated sample temperatures,
(2) Determine the effect of sample temperature _n the Oxygen Index values of rigid PVC, FVC plastlscls. PVC Fiastlsols SbjOj, Abson and Absun * PVC * Sb^Oj.
1 BFG08555
conclusiins
1) T:.e combust i . ap p Ji'jtuo has teen noci: i* : t- ; >vi iq f. r u r.: . tj .u*;.
v. . -
') 7*. rigI- FV;
'-..'jr exhibited a ILr-rir 2e?:e. ir uxy.v I: :
. ver the ter.?, era*. rc range i.J* - .05#C-
* t'7^ FVC, * 71 ,
r..:e i'lar-.atife it artlent temperatures ir.- Increased In ;
. 7 ... .
rapidly a: elevated ter.Lerat.jre5 than .-.rtouna IcOjI PVC, *:;< 11C^ . ?.t.
r.rpounds were rel:-extinguishing In ar.:ier.t air under all tc-.perjtur*
: ;n31* l *<n? Investigate3.
i) mree FVC plastis-is containing the same level c;' OOP, OTDP and DOP Santlclzer 1^8 exhltited linear decreases In Oxygen Index values ever
tne range :f ambient to l60*c. The rate cf decrease (increased flammability;
was DTDP> DOF y DOP + Sar.tlclzer 148.
-) A ccapariscr. of the plastlsol containing DOP Santlclzer V*t with one con taining DOF + St^o* Indicate*that
a) at sample temperatures below 1-5*C, S&203 Is equivalent t: or tetter than Santlclzer 1-8.
b) at sample temperatures above i-5*C, Santlclzer 148 appears to be a more efficient flame retardant
3) Two Abson compounds (ABS and ABS + FVC - Sb20*) also exhibited linear decreases ir. oxygen Index values with Increasing temperatures. ABS snowed a t.p* decrease ir. oxygen index value while ABS PVC St^Oj exhibited a lljl decrease, Ir. the temperature range 25* - 125*C. The ABS PVC + 3b203 compound exhibited a.-. o.I. of Z~.Z at 1-2*0 (27.5 at ambler.:;. When this material was preneatcu 1-. an air circulating oven at 150*C and tnen Ignited for 40 seconds In a Hare,
it was not self extinguishing as suggested by the above profile.
FUTURE WORK
1) Develop direct probe techniques f;r analysing combusti-r ur.d degradation products from polymers.
i) Continue the use of oxygen Index at elevated temperature.- :
measure the relative performance
fire retardant.*.
1) Measure other parameters during : :-tust 1 :r. relating t: flarr.atility and flame retariati.
ft)0S60Z
BFG08556
!
INTRODUCTION
In Part I
tnU- ire: 1,:U) we described me conutru Ct 1 'fi ' i
ra fj r -,yJ ra 1 E e.-tri-*
"v. live f lammablli: y of P-.'iy'.e r^. .V ii paratus provided C.I. data ' j ir. ::
1 re : : r. tr;c :.E. ! r.j*: -.er;t. Si r:e that f 1 ret ret - r*. , a : : 111
teer, -.ado ^r. . .r af par* - o 1 r. o r i er to meas ure the cxy ger. In '
leva*.:`i tfcnpc at u : u J . 7 j present report re .at.es sc.r.e .r t/:
7ne useful?
.T ml. approach lies In :m ability to lnve.t:,j*.
relative flammability of p-.v-.ers at higher temperatures ir whion
.'.roltlcr.: are more closely simulated. In addition, the relative
.
fire retardants ran tc measured outside the Halting factor :
ir . ? .Int
(i.e., conventional Oxygen lr.tex). Finally, combustion gas analy:-?.-, a . l.-t rtar.t
part of this overall study, :an be obtained.under a variety of expe-ir :ra. .niltisr
Since our last repcr*, an article has appeared in the literutjr l ` ; : wr\i ;h
oxygen Index determinations :f ABS, polystyrene and a polyester were total:.-; at
elevated temperatures. Pericdlcally reference will be made to this
i*:r purposes
tf comparison and additional information.
In our initial study of the oxygen index at elevated temperature we nave
(\ studied three systems: rigid PVC, plasticised PVC containing different flar.e
retardants and with different plasticizers and flaae retardant/non-flare retardant
Abson. Experimental details (sample compositions, temperature measure-er.ti'.
Initial testing, etc.) are 5-mmarized in Appendix t.
(1) M.K.C., Q.A.L., Status Report, #1, 8/26/70. Uj The oxygen index of a p:lyner is defined as the volume percent f
oxygen required to Just sustain combustion. {*) DlFietrc, J. ar.d Stepni:c*a, H.f Paper presented at 2ith SPE kr*-r- **' i*v.
Nay 1970, p. 46j-ucr.
BFG08557
31491
<
EXPBHIMEN.AL
f Da1 r t: ; a n t j
Li lt 1 "cv 1 u.-, ly it'.- * r1
".I I *, rhumbe: ',4;' b* : 1. : ! * . *if . 1 *i- {r
-.U-voi tij heating .
: i'v r < .
.I
[ : 1
. i"i !
: ... f r k : ` \ > r
ir
ii < : : c ' f <
\p . 11 : i
' 11 . ! r..
! !
. * if
. ' , '.Vi .
4 tr lv l 1 j 1 11 ;
ut J ouvr l. cr :
Aii!`! i.'m t - 11 ` ! 1
. J I":I: . t "/O', r-j./v t-i:\."
j'': " : -vI
up-rlvl- * "eat V' v'u:l w- ; ar j i*_ 'inert- * j ~'t n t..
x -hirve.v , a te-.: ' ratu:
: 1 * ; I r : 1 re *.
i'nt* re aim ;\r: tnlv, ",jevv . -.a;, tf n.e to ui :Tere\ * * j l*. .-a-.:'.- em;s*ivity.
Our *?r:s: inert \~ sarnie .i -t -'1 -* tale greet. : Igl : F7C '.p
a sarnie :onta 1 - 1 r* curb-, r
-II] b neateu ! this mam*-: `
A' . ;t?-r jr*n
a temperature ii fferert iai -r.lsts between sample ir i atnespru-r-: ,-*r- ".r 4-pl
!o an ri'flclent ra iiur.t ats.rrer.
At temperature.- it;v- 1*0*0 it was necessary t; mojify -*.* sa~p.- . idcr sue t_ tne l:ss of sample rigidity . Ir. this modification a snail vorti.al * *. ccr.tai.-
a set ::rew was used to rupt.rt tne sample.
Oxygen Index of Rigid FVC
f V.
As a first set of experiments, we Investigates the effe;*- of tenp-r
samples of rigid PVC Oe:n 70c., 30.4* PVC and Ge;r. 671**, :*.3* PVC].
CC'
Ir.iex ietemlnati cn were r.aie Ir: the temperature region frvrr. ar.rlerr. up *
The results of tnese first experiments are shewn graphically Ir. Figure I.
sample :obtaining
PVC exhibited a linear relationship be'-eer lnjex
specimen temperature. The oxygen Index of this sample at amblert was
polar.e: value * "i.b) ana aecreuscd to yj.} at *.'05*0. The sample corta:-.:
higher level of FTC had an initial oxygen Index of 0.4. The Iroex of f
renairei constant up to cO#C then decreasea in a linear farhi:-. up v -1 'C.
in:ex it this temperature was 33.fc. It is obvious tr.at at thes-* emperu:.
are v- decomposition temperatures of PVC the sample Is still flame retar
!o will not bum In ambient air. Considering the linear ^orti.r .: >
tnis i?:ond sample# the oxygen Index decreased by 13.0$ in tr~ region :.
The tar.pie containing nore filler (less PVC) decrease! only
In *.hi.- .
regi.* . Unfortunately, tnese two samples are 100 Jlsslmliur t a.-rlii
f iar.-.i t ility differences to higher levels >f ''liler lh the
It Is of interest f extrapolate there two 11:.os to u- av.*'.-
it t)./ (ambient atmosphere) and jeteirr.lne fr.e temperature
ilu.mi .w .
The -a-ple c-.-rtu Irin*? 80.PVC ext raf.oiates t..
-:illc- *-e
t7-;t rVC ext rap late* * j -.1*C; It Is bvl-us tr.at F7C Is se.'
all :.; :lre
:it 1 .-r-. r^fure experlme:.*. s with *his v- m| - :
1
: 1 : i. ! 11 '.j
PVC : rj . : j l
: * vj."1 u - lover. :
ra :a ' 1
'r l
f'} y .1"> r
t cr: * no el : e '*
. xt v :r : at
.
soo^seoz
BFG08558
w
-
BFFICT OP T fM K IA T U H OH OHCCH 1 K X VALUtS OP UCU> PVC M.OH
20937007
BFG08559
r a x valqu or ucn> rrc
TKNPKIATUM, *C
20387CXB
BFG08560
Oxygen Index of Plasticized FVC
A series of FVC plastlsols prepared by D M Warcj were 1- vt.v:
respect to oxygen Index at elevated temperatures, in all, :ivt 11r: *. -
; ;r.:ainir*g different plasticizers and two levels cf Sb^Oj were r\,iu
:1.
;f the formulations* trve plasticizers were o-dioctyl phthalatc (DOf).
phthelate (DTDP) and Sar.tlclzer 1<*8 (an alkyl aryl phosphate pla:*,J;:
the sane level. For each of these three formulations* a linear ie<
`
.....
Index with Increasing temperature was noted. These three effects *rr ; 4 -,,-*** . .
graphically In Figure XI.
Although the DOt and DTDP plastlsols have the same 0.1. at r,-,- -.t-peri* ,,re, the DTDP plastlsol has a lower Index (higher flammability) at hlrner than the DOP plastlsol.
Although this effect Is small it la believed to be outside or experi&ertai error. As a first approxlaation one eight expect the DOF compound t: exhibit a higher degree of flanmatlllty at higher temperatures due to Increased volatility. It is obvious that this effect Is not a controlling parameter. Considering the amount of fuel available* It can be shown that for every l.Og of plasticiser
degraded during surface pyrolysis* 0.67g of Cjj olefin and 0.5$g of Cg olefin are released. In other words the higher aliphatic content of DTDP may be responsible for the higher flammability of this plastlsol* Other parameters (l.t., heats of combustion) may also contribute to the observed phenomenon. It Is not understood why this effect is not seen at lower temperatures. It la recognized tnat other
systems must be studied before general trends can be absolutely stated.
In comparing the three plasticisers* It Is obvious that Sar.tlclzer ester Is an effective flame retardant; this Is apparent by conventional oxygen Index. However* the data at elevated temperatures indicate that the oxygen inaex of botn DOF and DTDP compounds decrease more impldly than the index of the Santiclzer plajtisol:
Plasticizer
DOF DTDP Santlcleer 14$
% Decrease* of Oxygen Index(u)
U.5 12*9 10*5
This type of information suggests that this technique may be useful ir. evaluating flame retardants at elevated temperatures. This possibility u dra-a* tlcally demonstrated In the next section.
Percent of Initial value at ambient temperature. (4) Temperature range I*#C - l1*3*C
SiMSGQtZ
BEQQS561
tmct or tmcmtvu or oxycu
tnx valubs or rvc rum sols
I 7
20987010
31491
BFG08562
Oxygen Index of Plasticize: FVC/St>JOi Syster.s
Researcnera at Srar.f rd Research Institute i*. a stu ly
%rr
of p:l;.--.era have rut ccr ri ijritU effort In: ur Jer'ctarliru' : : in-,c
syster 3t'Oj/Ck 1 `(a I.*`
la :
wllp.atl:' -*1 I * -a * -- i
.,-
Initial stulie; *ve jr..-* *?;jt the -..s* pr svirl* . -anl j- : : -vr :"v* > jati
In trio ryster. l-vcive.-
: rrjti.n :r icCI'. 1*. ~.j: Le *t
halij* ilffuse? I-*-'
-*.? pnu:. *rj polso-.s v * flu-c via t
:*:I :
quencr.ir.g react:'-.. A
>i effect Is r:t-j i ?r P7C/Sfc;C
Researcf
St.**'!'.. : :
V>at *i relatively r.ie*t-
.. pyf ;
more flammable w 1 \r. 3C;C*
`f:ur. 1- tr.e -ioscnre :i *.rlr
. L.* - r.**.
has shewn that StiOx nac'u :ovlytic effect un tne ucgraiaci.- f
:*. i*,*j
hydrocarbon* a*. .-lativ*iy -1C' - vat fluxer.t' ) However, t-i. i.c. : . ;4r
under r.ilder heating corul* 1 .r.s . (7) These two pleceo *f resea;. : -ur.;-* *. tr.at
at relatively higr fluxe: :: energy s*^ nay t-. Ineffective r rav tvt'. :*telv?e
the flammability :f a svster.. Our studies ->n the fUrrabiilty . f a fv: - Sh?0>
system also suggest but .
i- rot *xperi.7.er.tally sr.c tra*. *.: 13 \r-e. tfe
have studied the effect ;f teaperaf re cn the cxvgen Index .r PVC pia-*t 1 s:is
containing 2 different levels of St^O*. This effect Is illustrated graphically
in Figure III. This plcc shows that the plastiacis containing Sc^Oj exnicited
an initial incrtaie In oxygen Index as the sample temperatures were increased.
A maximum Index occurred around 80*C but then decreased sharply up to lcC*C, the
limit of experimentation. Higher temperatures were attempted but degradation
and melting destroyed the validity of the experiments, nevertheless, tr.e limited
data present ^ooe Interesting trends which Indicate that Sb^Ox is not ar. effective
flame retardant at higher heat fluxes or when the sample has Seen preheated to a
temperature Just below the decomposition point. If the three experimental curves
in Figure III are extrapolated to an oxygen index of 20.9, the :orrespor.ilrg temp
eratures for the three plastisols would be:
Pla5tlscl
3antlclzer lug 1.77* SbpOx 3.**7*5b205
Sample Temperature for Flaming Joabusti.r. Ir. Ambient Air 313*C
iy**C 17S*C
(5) Stanford Research Report (6) Learaonth, O.S. Br. Folym. J., 1970, Vol. 2, March, (7) SRI Report #S July 6, 1970.
im s e o e
BFG08563
intCT or TfMniunne on oxygen index muu or rvc rusnsou oontaininc
f
(
XftMl
ZTO8GOZ
BFG08564
10
It 1* obvious that based on this analysis and extrap jiatK- .: experl-entai uta, Santiclzep is the preferred flame retardant In this systerr.. Althougn t,'n :v*.ardints Impart sei:-extln,#ulsning properties *: the PV:*DOP ?y?*.-- at z*r.;:e te-.peratures near ancient* the Jala suggest that this doer *sot 00:-: ton vji-.plez are lreheated. O'**? rca-m : : vhis nay c* due * "r- :'a,, *. j* under *r.ese above anblent eor-Jlticr.*, irtl-.ony trlchl.rilf is r.t reiea:*: it the "rlgrt tine and right plu-e" t.. Impart self-extirgulshlng ,'rcptr-!* t. the . :tpound.
Al'nsjgr- tne jL^vv .-o liSiors need to b- ve rifle: ty
J% i-.r a rur.ct-
.*eii di fined c-ysttnA. I- Is .evicus that oxjgvr. Index rgacurtd
verify*
temperatures provides Important irfor-.atlon tnat Is net available ::.r. conventional
.xygen Index testlr*.
At son
T*ie third sy3te- studied involved Aoson and an Abs:-'FV-VSti^; self extinguishing
fcraulatirr.. The oxygen index values of these two materials -*ere
end ;7.j
respectively. The effect of sample temperature on cxyger. index Is sn.m in
figure IV.
For both systems* this relationship is linear up t: temperature Investigated.
t-.e nighest
It is of Interest to note that the system containing PVC-St--, did not exhibit a maximum at higher temperatures like the DOP-FVC-Sb^Oj system discussed above. The level of fuel (ABS) is higher In this case than lr. one other case (DOP) and for that reason It Is not surprising that the two systems exhibit different relationships for oxygen Index vs. sample temperature. Again* sore work must be carried out lr. order to clarify these differences.
A comparison of our results with those of DlPletro's can be made for this system. In his work he has Investigated ABS and a formulation containing 25f bromlnated fire retardant. DiPletro noted that from ambient to lc;*C the 0.1. of ABS decreased linearly by 6.5*; while that of the retardant material decreased only 3.# In our work we observed a 6.70* decrease for Abson but a 110+ decrease for the ABS-PVC-SbgOt system. (All systems tre for the same temperature range.) These data art summarised below:
Oxygen Index
DiPletro
Thl* Study
ABS 25*C 125*C
18.3 17.1
19.* 18.1
Plre Retardant 25*C 125*C
28.7 27.9
^7.5 ^.5
M
* % A the value rec;r:ad at ambient
;0987013
BFG08565
tmCT or TCKRRATUM Oil OXYGM 1MDCX or ABSOH 89129, 89150
41
20937014
xm x anueo
31491
BFG08566
1.
Sine* both systems have equal level -f fire reMrdent 1* is obvlcus that
the bromlnated retardant Is superior to the PVC-3b ,0i system. :r.e relatively Urce
decrease In oxygen Index Tot- the PVC/3bfc0* system ts' Analogous - that observed
In the DOP/PVC/SbjO* system. It is Important to note tnat the ABS/PVC, St. Oj
system which exhibits an .xyeen Index of
at K'1.'? la not self extirriisnlng.
Generally materials which exhibit an index between .. ind *6 wl.l burn lr, a
horizontal pcaittor or In a vertical position when me sample 1? ignites from
the bottom. This was demonstrated for the ABS/PVC/St Ot sample by prew*;-i:.g tne
sample in an over to lJO^C'ind igniting it from the c:*.tom. Urier these 'ondlti:ns,
the sample was not sell extinguishing. A Manic at r.*. temperature was jelf-
extlngulshlng as would be expected from the oxygen Index.
CONCUJSIOH
Although tne present study Is in Its early stages and tne data quite limited* It Is obvious that the approach described lr. tnls paper offers sang possibilities for investigating fire retardant systems. It has been shown for example that two'different systems which exhibit the same oxygen Index at room temperature show quite different Index values at elevated temperatures.
Future work will Include additional studies or. Sb^Ox systems and initial combustion studies on polymethylmethacrylate and other well defined systems.
BFG08567
4
2098701S
BFG08568
I
>u
I) Cojpoun^jdjntKlcittoyjn^^ojgotltion*
aigid rvc
The two rlgic FVC jOT.pvUnds studied ir. tnls 3tul; .ere 3*c:\ 'Ot* (greer.J Oeon :714 (gray) and had the following expositions:
708^
%
XU
rvc SAN Hycar 8-20
S-S T102
b0.4 2.4 --
--
1.6 n.2
37.; 2,t 5.0 0.5 --
1-7
Plastlsols
The plastlsols studied were prepared by D.W.Wari the companions of *ilct> were:
Compound 4
Geon 121
POP
DPDT
SbjQj
Santlclser
131-24-101-2
IOO
89.5
5.5
-3 100 89 -- 7.0
131-24-104-2 100 45
--
-4 100 -- 90 --
-1 100 90 -- --
-*
---
Abson
Abson materials Investlotted were off the shelf expounds and had the following formulations.
AK rvc SbpOt Other
Abaon 0J15O Abm 89129
100 75
25
8 ?-5
II) gxgerUMnta^atail
Oxygen index determination at ambient temperatures were made In a manner previously described. Heat to the combustion chamber was provided by
(1) Heating tape on 16" x 3/8" atmosphere lire to the base of the 0.1. chamber.
(2) Hot plate for base of chamber, and
(3) 8* heating tape around Pyrex chimney.
20387017
BFG08569
/
I
It
Oxygen Index dete.-xlnationa vert generally ;arried out or> ]/a* x j/u* * rnpltt which were clamped Into the Map It holder, Time for equilibrium a* eleva**: temperature* was measured by placing one thermocouple in the s*is stre^.r next ,, the sample and a second thermocouple in the central wre \r.t uampi*. Tr.\z to equilibrium was generally 0 minutes or less, - r ea^h r.~, a .0 -ir.ute wor-
up period was followed.
For all determinations reported, the temperature was '-a InCaine a Dei..* -re
decomposition/evaporation stage of the polyr.er.
-.erttlrat: r$ were r/. av.e-.jt*.
under these conditions lue to the absence of equilibrium pmrareters.
III) Oxygen Index values
The following Is a compilation of data r*::rded for trie various aaaplea and different temperatures.
Peon 7063 Sample Temp. (*C)
Oxygen Index
25 .*9.7 59 *7.6 95 **5.8 123 M.O l6l 43.**
206 39-9
Sample Temp.
25 77 122 163 206
Qeon 8714
Oxygen Index
40.4 40.4 39.0 36.0 33.7
flastisol 131-24-161-2
Index
50 23.9 75 .24.5 100 i4.1 123 22.8
iue 21.5
BFG08570
1
Plaatlaol
w Tr.p. 25'C 50 77
101 129 146 lbl
111-24-161-5 oxyjran Index 25.0
25-2 25-5 25.0 23.8 22.5 21.7
Plaatlaol Samole Te"p.
76 100 132 146
131-24-104-1 Oxvcan Index -- 20.8 20.1
19.7 19.2
Plaatlaol 131-24-104-4 4aul* Te*P.
77 123 161
20.5 19.3 18.6
16 *
Haatlaol 131-24-104^2
axaple Taap.
Ocreen Index
25.2
77
123 144
23.9
23.1 22.6
Abaon 89150
18.6 123 18.0 143 17.7
--Sacpoila5*cT"P.
78 126 143
Abson 89129
Oxygen Index h-5 26.3
24.5 24.2
Additional data not reported is recorded In Data Book #001-35; 6/2C/70.
31491
6T02&G0Z
BFG08571
